JPS61228883A - Allergic nasitis preventing device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] [Industrial use! 'P] The present invention relates to an allergic rhinitis prevention device for preventing allergic rhinitis caused by fine particles floating in the air.

[Conventional Technique] It has been known that allergic rhinitis is caused by fine particles floating in the air, such as house dust and mold, and wearing a mask can reduce the amount of these fine particles. Attempts have been made to prevent inhalation of Wearing a mask can reduce the symptoms of allergic Iikitis! Although it is widely recognized that it is effective in reducing wear, it has drawbacks such as an unsightly appearance, suffocation, and the need to wear it for long periods of time. On the other hand, nasal cavity filters have been proposed to solve the problem of poor appearance (
For example, Japanese Patent Publication No. 51-14839) has the disadvantage that if an attempt is made to provide a sufficient anti-corrosion effect, the pressure loss increases and the patient feels uncomfortable.

[Problems to be Solved by the Invention] The present inventors have developed an allergic rhinitis prevention device that prevents the inhalation of fine particles into the nasal cavity, does not cause deterioration in appearance, is less stuffy, and is comfortable to use. As a result of extensive research aimed at this purpose, it was discovered that the above object could be achieved by inserting an ultra-small centrifugal force or inertial concentrator into the nasal cavity, and the present invention was completed.

[Means for solving the problem of aa] Firstly, the present invention is used by being inserted into the nasal cavity. The present invention provides a device for preventing allergic rhinitis, characterized in that the device is a centrifugal force collector, an inertial force collector, or an ILZ device using a combination of the two.

[Function] When a filter collector IW device such as a mask is used in an area with a high air flow velocity, such as the nasal cavity, pressure loss generally increases due to heat, which causes difficulty breathing. On the other hand, the centrifugal force or inertial diaphragm of the present invention, on the contrary, utilizes the high air flow velocity in the nasal cavity to enhance the collection effect, and the pressure loss is also much lower, making it different from the one-filter type. They are essentially different. Although the direct purpose of the present invention is to prevent allergic rhinitis in its original sense, the present invention is highly versatile and can be used for various other purposes where prevention is required, such as bronchial asthma and powdery mildew. It can also be effectively used to prevent occupational diseases. Therefore, allergic rhinitis as used in the present invention is defined to include all risks and harm caused by inhalation of airborne particulates.

[Example] Hereinafter, the present invention will be described in detail based on the Example shown on page 1 of (i! That is, the collection 7WIf indicated by reference numeral 1 is used by being inserted into the nasal cavity, and it is desirable that the insertion position be as shallow as possible without protruding from the nostril. In between, it maintains airtightness and substantially prevents air from entering the body without passing through the Intaka device, and also has the role of holding the IIz device in a predetermined position and posture.

The contact surface between the vaginal wall and the protrusion 5 is desirably as small as possible without impairing the above-mentioned role in order to obtain a comfortable feeling of use, and is usually located within 10 mm from the nostril. . At least a part of the external shape of the protrusion 5 is substantially similar to the n-cavity cross section around the position i6,
It is desirable to have an equal or larger cross-sectional area.

The material of the protrusion 5 is preferably a soft material such as a soft resin, rubber, leather, a braided product, or a composite material thereof, but hard resins, metals, glass, and ceramics may also be used.

In view of ease of manufacturing to suit the shape of the nasal cavity, the material of the protrusion 5 is preferably polyurethane, particularly foamed polyurethane, or silicone rubber, particularly room temperature vulcanizable silicone rubber.

Further, if necessary, the two left and right collectors can be connected by a U-shaped connector shown at 7.

The connector is made of elastic metal, resin, or a combination thereof, and has a ↑III structure that clamps the septal end of the rope with its elasticity. The purpose of the holding tool is to reinforce the role of the protrusion 5 in holding the dust collector in a predetermined position and posture.

Next, the BH main body used in the present invention will be explained. Although various types of RinzH are known (e.g., Iitani m-15i:rRinku equipment J9 Nikkan Koto Shimbun (1963)), all of them are large-scale equipment intended for industrial use. be. The abrasive collector used in the present invention must have low pressure loss, high collection efficiency, and be easily miniaturized. Those that satisfy these conditions are centrifugal dust collectors, inertial dust collectors, and combinations thereof.

A centrifugal dust collector is a type of MH that uses centrifugal force to collect dust, and a typical example is a cyclone. Figure 2 shows an example of a single-blade centrifugal dust collector, which is of a type called a guide vane type straight flow cyclone.
It consists of an outlet pipe 9, a collection part 2 and a protrusion M5.

Dust-containing air flows in from the bottom and is given rotational motion by the guide cylinder a4. The particles are subjected to centrifugal force, rotate along the wall surface, adhere to the inner surface of the collecting section 2, and are collected. Collection fl
For example, the following method can be adopted as 12. % like polyurethane foam first? L material,
This method uses a water-absorbing polymer or a mixture of the two, which is impregnated with water immediately before use. The second method is to apply a sticky liquid or semi-solid such as oil or grease to the inner surface of the collection part 2. A third method uses a filter that allows air to pass through to a certain extent. A combination of the above methods can also be used, such as by pre-impregnating the filter with water. The purified air passes through the outlet pipe 9 and is inhaled into the body.

Next, inertia collection 7M! ! Specific examples of id are shown in FIGS. 3, 4, and 5. In the inertial collector, the iris flow is given a sudden change in direction by an obstacle, and the particles are stopped by inertia! ! When attempting to do so, it is separated from the airflow, collides with j* harmful object, and is captured. In a broad sense, a centrifugal force or filter dust collector is also a type of inertial dust collector, but in the present invention, these are excluded and the term refers to a reverse nozzle type, an impactor type, a set of louvers, a reversal type, a balance type, etc. . 3rd tl! The dust collector shown in 1 is equivalent to a reverse nozzle type, and includes a nozzle 10, a collection section 6, and a support tube 11.
and the protrusion 5. Dust-containing air flows in from the lower part, is accelerated by the nozzle, hits the collecting section 6, changes direction, passes through the opening of the support tube 11, and is sucked into the body. The particles collide with the collection unit 6 and are captured. Supplementary part 6
The concept is the same as that of the collecting section 2 in FIG. Nozzle 1
The cross section of 0 does not necessarily have to be circular, and may take any other shape such as a circular shape.

Figure 4 is also a type of inertial precipitator, similar to a set of louvers. The dust-containing air flowing in from the bottom is passed through the 5! ? It is inhaled into the body through several slits or pores (hereinafter referred to as slits). When particles pass through the slit, they adhere to the slit wall and are collected. The inverting blade row 12 is made of a porous material such as polyurethane foam and is impregnated with water before use. The cross section of the inverted blade row 12 can have any shape.

Figure 5 is an example of a reversible snow collector H, which is a type of inertial dust collector. The air passage is S-shaped, and the particles! f It adheres to the wall and is collected. It is made of STTiB2 porous material and is impregnated with water before use. The cross section of the S-stroke 13 can have any shape. In addition, the inverted blade row 12
The S-shaped space 13 can also be made of a water-absorbing polymer or a crosslinked product thereof.

FIG. 6 is a specific example of a combination system in which an inertial dust collector is placed after a centrifugal dust collector. This method is effective in preventing reliability deterioration due to particle re-scattering.

FIG. 7 shows a specific example of a system in which a plurality of centrifugal dust collectors are connected in parallel.

Figures 8 to 10 show specific examples of a balanced type, which is a type of inertial precipitator. The balancing gap 14 has a collision plate 15 inside. There are 11 variations in the shape and arrangement of the collision plate.
Figures 9 and 10 are my own schematic diagrams showing an example of the arrangement method. The balancing gap 14 and the collision plate 15 are made of porous material or water absorbing material, and are impregnated with water before use.

Note that resins, rubbers, metals, ceramics, and composite materials thereof can be used as materials for the eight parts shown in FIGS. 2 to 10. If these materials are formed into porous materials by foaming, sintering, or other methods other than those specifically specified, they can be impregnated with water during use, and the collection ability can be improved.

In addition, in Figures 2 to 10, only those whose center lines (not shown) are TIi&'R are shown, but in Figure 1, collection 1
2I! In order to avoid contact with the nasal cavity wall as much as possible, like the t1 main body 1, a body whose center line is curved to match the shape of the nasal cavity may also be used.

[Effects of the Invention] Next, the effects of the present invention will be described. The most important index for evaluating the effectiveness of the present invention is its recommendation performance.

Since the performance of the collector can be estimated to some extent by calculation, an example of calculation for the guide vane type straight flow cyclone shown in Figure 2 is shown below. That is, in this case, 100% separation limit particle diameter D! ,. . is calculated from the following Strauss equation (Iitani Tsuna -
Edited by: Performance of Snow Collection Equipment J, P27 Santo Technical Center (
1977)).

Here, L: Minute chamber length - 0.8X 10-2rnD,: Cyclone cylindrical diameter - 0.6X 10-2mDb = Core diameter (
D, /D, -0,3) v 22 Cyclone inlet flow velocity -8,8 m/s e cβ: Guide vane exit angle -45゜μ: Viscosity coefficient -1.8XIC1'''5Kg/m -s
e cρ,: Air density 111-1, 3 K g /
m 3ρ,: powder earthquake density ff-0,8X10K g
/ m 'Pshi: Cyclone inlet pressure Pc: Cyclone minute m Fusho force (PC/P, -1)
γ(-C2'C-: Specific heat ratio.

The basis for the item (■) here is as follows. In other words, the lungs normally produce 500 m1 per breath.
Inhale and exhale the air of
1984)).

Now, if the time required for inhalation is 1 second and it is constant speed suction, the flow rate of air passing through the two nostrils is 500 m1/sec.
It becomes a. If the diameter of the cylindrical part of the cyclone is 0.6 cm, dividing by the cross-sectional area will give a flow rate of 8.8 m/sec.

Substituting the above numerical value into the formula gives DC. am 3.9 X I Q-'rn -3,
It becomes 9 μm. This indicates that all particles larger than 3.9 microns can be collected. For example, if the allergen is pollen, its particle size is usually 25 to 1009
Since it is said to be in the cyclone range, it can be seen that the cyclone is able to collect 100% of the amount.

In addition, looking at the formula of 5trauss, if the length L, guide vane angle β, and cross-sectional shape /D are constant, the smaller the cylindrical part diameter D0 is, the smaller the 100% separation limit particle diameter becomes. It can be seen that the results are improved. Therefore, as an example shown in Fig. 7, if two to six guide vane type straight flow cyclones with smaller diameters are used in parallel, a more effective nasal aggregator can be obtained. It can be manufactured.

Furthermore, we prototyped the guide vane type straight flow cyclone shown in the above calculation example and attached it to a glass tube to achieve an air flow rate of 8.8 m/
When the pressure loss was actually measured when the temperature was set to 25 mm, it was found to be 25 mm icicle. This is a collection of filters! Ii
This is a much lower number compared to the previous model, and ensures a comfortable feeling of use with less stuffiness.

[Brief explanation of drawings]

FIG. 1 is a diagram showing how an allergic rhinitis prevention device according to an embodiment of the present invention is used. 2 to 8 are knitting cross-sectional views showing embodiments of the present invention.
Figure 2 shows a guide vane @ two straight flow cyclone, Figure 3 shows a reverse nozzle type inertial dust collector, Figure 4 shows a louver set inertial dust collector, Figure 5 shows a reversing type inertial dust collector, and Figure 6 shows a reverse nozzle type inertial dust collector. A combination of a guide vane type straight flow cyclone and a reverse nozzle type inertial precipitator. Figure 7 shows a system in which two guide vane type straight flow cyclones are sprung in parallel, and Figure 8 shows a parallel type inertial precipitator. be.
FIG. 9 and FIG. 10 are schematic diagrams showing knitted surfaces. 1 is the main body of the collection a11, 2 is the collection part, 3 is the core, 4 is the guide vane, 5 is the protrusion, 6 is the collection part, 7 is the connector, 8 is the cylindrical part, 9 is the outlet pipe, 10 is the 11 is a support gap, 12 is an inverted blade row, 13 is an S-shaped gap, 14 is a balance gap, and 15 is a collision plate.

Claims (1)

[Scope of Claims] 1. A dust collector used by being inserted into the nasal cavity, characterized in that the dust collector is a centrifugal dust collector, an inertial dust collector, or a combination of the two. A device for preventing allergic rhinitis. 2. The device for preventing allergic rhinitis according to claim 1, wherein the centrifugal dust collector is a single guide vane type straight flow cyclone. 3. The device for preventing allergic rhinitis according to claim 1, wherein the centrifugal dust collector has a structure in which 2 to 6 guide vane type straight flow cyclones are springed in parallel. 4. The device for preventing allergic rhinitis according to claim 1, wherein the inertial dust collector is of a reverse nozzle type. 5 Claim 1 in which the inertial dust collector is a louver type
6. The device for preventing allergic rhinitis according to claim 1, wherein the inertial dust collector is of an inverted type. 7. The allergic rhinitis prevention device according to claim 1, which is a combination of a guide vane type straight flow cyclone and a reverse nozzle type inertial dust collector. 8. The device for preventing allergic rhinitis according to claim 1, wherein the inertial dust collector is of a balanced type.